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The top and bottom images produce a dent or projection depending on whether viewed with cross- () or wall- () eyed vergence. An autostereogram is a two-dimensional (2D) image that can create the optical illusion of a three-dimensional (3D) scene. Autostereograms use only one image to accomplish the effect while normal stereograms require two.
Diffraction spike. Diffraction spikes are lines radiating from bright light sources, causing what is known as the starburst effect[ 1] or sunstars[ 2] in photographs and in vision. They are artifacts caused by light diffracting around the support vanes of the secondary mirror in reflecting telescopes, or edges of non-circular camera apertures ...
An internationalised vector image was then created by User:Silversmith and uploaded to Commons as Image:Schematic diagram of the human eye.svg (see right). On request, this version with English annotations was created and uploaded here. Later, the text labels were made into hyperlinks pointing at relevant articles in the English Wikipedia.
Visual system. The visual system includes the eyes, the connecting pathways through to the visual cortex and other parts of the brain (human system shown). The eye is the sensory organ of the visual system. The iris, pupil, and sclera are visible. Identifiers.
Eye black. Finnish player of American football wearing eye black. Eye black is a grease or strip applied under the eyes to reduce glare, although studies have not conclusively proven its effectiveness. It is often used by American football, baseball, softball, and lacrosse players to mitigate the effects of bright sunlight or stadium floodlights.
Color blindness or color vision deficiency ( CVD) is the decreased ability to see color or differences in color. [ 2] The severity of color blindness ranges from mostly unnoticeable to full absence of color perception. Color blindness is usually an inherited problem or variation in the functionality of one or more of the three classes of cone ...
“The clouds do not provide the type of protection that we will be looking for to keep the eyes from being damaged,” she said. What signs should I look for to know whether my eyes have been ...
Cross section of a human eye, showing a detached retina at top. Date: 24 June 2009, 17:44 (UTC) Source: Schematic diagram of the human eye.svg: Author: Erin Silversmith from an original by en:User:Delta G. derivative work: RexxS; Other versions: Derivative works of this file: Human eye cross section detached retina-es.svg: SVG development